CN104919219A - Magnetic gear device - Google Patents
Magnetic gear device Download PDFInfo
- Publication number
- CN104919219A CN104919219A CN201380070003.6A CN201380070003A CN104919219A CN 104919219 A CN104919219 A CN 104919219A CN 201380070003 A CN201380070003 A CN 201380070003A CN 104919219 A CN104919219 A CN 104919219A
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- China
- Prior art keywords
- magnetic
- mover
- magnet
- gear device
- magnet row
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0242—Magnetic drives, magnetic coupling devices
Abstract
The invention provides a magnetic gear device for increasing the force transmitted between a first magnet array, a second magnet array and a magnetic body array. A magnetic gear device provided with: a cylindrical first magnet array in which multiple magnetic pole pairs are each disposed at substantially equal intervals in the circumferential direction; a cylindrical second magnet array disposed concentrically on the outside of the first magnet array so as to face the first magnet array and in which multiple magnetic pole pairs are each disposed at substantially equal intervals in the circumferential direction at a shorter pitch than the first magnet array; and a cylindrical magnetic body array disposed between the first magnet array and the second magnet array and in which multiple magnetic bodies (22) are each disposed at substantially equal intervals in the circumferential direction. The magnetic gear device is configured so that the distances between the multiple magnetic bodies (22) and the second magnet array are shorter than the distances between the multiple magnetic bodies (22) and the first magnet array, and the magnetic bodies (22) are wider in the circumferential direction on the first magnet array side than on the second magnet array side.
Description
Technical field
The present invention relates to magnetic gear device, this magnetic gear device comprises the first and second magnet being configured with multiple pole pair respectively with basic equal intervals along specific direction and arranges and be configured with the magnetic row of multiple magnetic along described specific direction with basic equal intervals, and this magnetic row are configured between the first magnet row with the second magnet row.
Background technique
Magnetic gear device is disclosed in patent documentation 1 and non-patent literature 1.This magnetic gear device comprises and is circumferentially configured with cylindrical shape first mover of multiple pole pair and the second mover respectively with basic equal intervals and is circumferentially configured with yoke in the middle of the tubular of multiple magnetic with basic equal intervals, and this middle yoke is configured between this first mover and second mover.Multiple magnetic is configured in the substantial middle in the gap of the first mover and the second mover.
Prior art document
Patent documentation
Patent documentation 1: International Publication No. 2009/087409 pamphlet
Non-patent literature
Non-patent literature 1: Ikeda wise man also, middle village builds in two, one ノ storehouse, " research about improving permanent magnet type magnetic-gear efficiency " (" permanet magnet formula magnetic mood ギ ア efficiency upwards に Seki The Ru one is investigated "), magnetomechanics meeting paper magazine 33 volumes in 2009, No. 2,130-134 page
Summary of the invention
Invent problem to be solved
Present inventor finds: compare with the magnetic configuring middle yoke in the first mover and the substantial middle in the gap of the second mover, near higher with moment of torsion transmission efficiency during the magnetic of yoke in the middle of the configuration of the mover side of low speed rotation.
The means of technical solution problem
Magnetic gear device of the present invention, comprising: the first cylindric magnet row, and it is circumferentially configured with multiple pole pair with basic equal intervals; The second cylindric magnet row, itself and described first magnet arrange opposedly in the outside that described first magnet arranges and described first magnet row arranged coaxial, and are configured with multiple pole pair along described circumference with basic equal intervals with the spacing shorter than the pole pair spacing of described first magnet row; Arrange with the magnetic of cylindrical shape, it is arranged between described first magnet row and described second magnet row, and be configured with multiple magnetic along described circumference with basic equal intervals, the feature of described magnetic gear device is, distance between described multiple magnetic and described second magnet arrange be less than described multiple magnetic and described first magnet arrange between distance, the described first magnet row side of described magnetic is broader in the circumferential than described second magnet row side.
Magnetic gear device of the present invention, is characterized in that, the size in the described circumference of the described first magnet row side of described magnetic is greater than the size in the described circumference of described second magnet row side.
In the present invention, when the first magnet arrange the second magnet with High Rotation Speed or movement arrange with low speed rotation or mobile time, the second magnet row side closer to low speed side compared with multiple magnetic arranges with the first magnet of high-speed side configures.As described below, as compared to the substantially central portion multiple magnetic being configured in the first magnet and arranging the gap arranged with the second magnet, the moment of torsion transmitted between the first magnet row with the second magnet row is larger.
When the equal and magnetic thickness in interval that the first magnet row on opposed direction and the second magnet arrange is also equal, when namely this interval and thickness are fixed on constant design load, multiple magnetic is preferably configured in low speed side.
And the first magnet row side of magnetic is broader in the circumferential than the second magnet row side.Such as, the size in the circumference of the first magnet row side of magnetic is greater than the size in the circumference of the second magnet row side.In entirety magnetic cylindrically arranges, even if magnetic row rotate, create the centrifugal force making each magnetic to radial outside movement, the masterpiece also having resistance centrifugal force is used on each magnetic.In addition, because magnetic row are near the second magnet row side configuration, therefore, although the attraction force on radial outside direction acts on magnetic, the masterpiece also having resistance centrifugal force is used on this magnetic.
Therefore, the retaining layer that the outer circumferential side noting be used in magnetic row arranges cover and so on stretches to radial outside to prevent magnetic due to centrifugal force or attraction force.Due to this retaining layer need not be arranged, therefore, it is possible to the second magnet shortening multiple magnetic and low speed side arrange between radial distance.Therefore, it is possible to make the moment of torsion of transmission between the first magnet row and the second magnet row larger.
Magnetic gear device of the present invention, is characterized in that,
Described magnetic row have spacing wall, and described spacing wall keeps described multiple magnetic, and is separated in described first magnet row side and described second magnet row side.
In the present invention, owing to having the spacing wall separated in the first magnet row side and the second magnet row side, therefore, it is possible to the environment of the environment of the first magnet side and the second magnet side is separated.
As mentioned above, even if magnetic row rotate, each magnetic acts on centrifugal force, also can be revolted the power of centrifugal force to each magnetic effect by spacing wall, therefore, it is possible to prevent magnetic from coming off from spacing wall.In addition, due to same power of being revolted attraction force on each magnetic by spacing wall effect, therefore, it is possible to prevent magnetic from coming off from spacing wall.
Magnetic gear device of the present invention, is characterized in that, described multiple magnetic is kept by described spacing wall and exposes in described second magnet row side.
In the present invention, when the first magnet arrange the second magnet with High Rotation Speed or movement arrange with low speed rotation or mobile time, magnetic exposes to the second magnet row side from the spacing wall that magnetic arranges.Therefore, can make magnetic and the second magnet arrange between distance short as much as possible, and can transmitting torque be improved.In addition, can prevent magnetic from exposing in the environment of the first magnet row side.
As mentioned above, even if magnetic row rotate, each magnetic has acted on centrifugal force, also can be revolted the power of centrifugal force to each magnetic effect by spacing wall, therefore, even if multiple magnetic has the structure exposed in the second magnet row side, also can not come off from spacing wall.In addition, due to same power of being revolted attraction force on each magnetic by spacing wall effect, therefore, even if multiple magnetic has the structure exposed in the second magnet row side, also can not come off from spacing wall.
Magnetic gear device of the present invention, is characterized in that, described multiple magnetic is buried in described spacing wall.
In the present invention, because magnetic is buried in spacing wall, therefore, it is possible to prevent magnetic from exposing in the environment of the first magnet row side and the second magnet row side.
As mentioned above, the thickness that will not cover the spacing wall part of magnetic radial outside is formed the very thick magnetic that prevents disperses to radial outside due to centrifugal force.In addition, due to same power of being revolted attraction force on each magnetic by spacing wall effect, the thickness that therefore will not cover the spacing wall part of magnetic radial outside is formed very thick.By the thickness of the spacing wall part of thinning covering magnetic radial outside, can make the second magnet of magnetic and low speed side arrange between radial distance shorter, can make first magnet row with the second magnet row between transmit moment of torsion larger.
Magnetic gear device of the present invention, is characterized in that, described magnetic row have the joint connected by adjacent described multiple magnetics, and described multiple magnetic and described joint form as one.
In the present invention, because multiple magnetic to be connected by joint and multiple magnetic and joint form as one, be therefore easy to arrange magnetic row.
As mentioned above, even if magnetic row rotate, each magnetic acts on centrifugal force, also can be revolted the power of centrifugal force by spacing wall to each magnetic effect.In addition, on each magnetic, the power of attraction force is revolted equally by spacing wall effect.Therefore, it is possible to reduce the power acting on magnetic and the relevant centrifugal force on the attachment portion of joint.Therefore, it is possible to prevent the attachment portion of magnetic and joint from fracture etc. occurring.
Magnetic gear device of the present invention, is characterized in that, the distance between described joint and described first magnet row is less than the distance between described joint and described second magnet row.
In the present invention, when the first magnet arrange the second magnet with High Rotation Speed or movement arrange with low speed rotation or mobile time, the distance between joint and the first magnet arrange be less than joint and the second magnet arrange between distance, therefore joint magnetic saturation.Therefore, the ratio being helpless to the invalid magnetic flux of the power be passed is reduced.
Magnetic gear device of the present invention, is characterized in that, described multiple magnetic comprises laminate steel.
In the present invention, be difficult to produce eddy current in magnetic.
Magnetic gear device of the present invention, is characterized in that, described first magnet row comprise sintered magnet, and described second magnet row comprise binding magnet.
In the present invention, the low speed side being easy to produce eddy current is made up of binding magnet, and the high-speed side being difficult to produce eddy current is made up of sintered magnet.Because sintered magnet is larger than the magnetic force of binding magnet, therefore can be suppressed the loss produced due to eddy current by this combination, and guarantee transmitting torque.
Invention effect
Use the present invention, arrange with at the first magnet and the second magnet arrange between the substantial middle in gap configure compared with magnetic arrange, can improve arrange at the first magnet, the second magnet arrange and magnetic arrange between the power of transmission.
Accompanying drawing explanation
Fig. 1 is the side cross-sectional view of the configuration example of the magnetic gear device that embodiment of the present invention 1 is shown.
Fig. 2 is the chart of the analog result of the transmitting torque illustrated about magnetic gear device.
Fig. 3 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 1 is shown.
Fig. 4 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 2 is shown.
Fig. 5 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 3 is shown.
Fig. 6 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 4 is shown.
Fig. 7 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 5 is shown.
Fig. 8 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 6 is shown.
Fig. 9 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 7 is shown.
Figure 10 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 8 is shown.
Figure 11 is the side cross-sectional view of the configuration example of the magnetic gear device that mode of execution 2 is shown.
Figure 12 is the exploded perspective view of the configuration example of the magnetic gear device that mode of execution 3 is shown.
Figure 13 is the side cross-sectional view of the magnetic gear device of mode of execution 3.
Figure 14 is the exploded perspective view of the configuration example of the magnetic gear device that mode of execution 4 is shown.
Figure 15 is the side cross-sectional view of the magnetic gear device of mode of execution 4.
Figure 16 is the exploded perspective view of the configuration example of the magnetic gear device that mode of execution 5 is shown.
Figure 17 is the side cross-sectional view of the magnetic gear device of mode of execution 5.
Embodiment
(mode of execution 1)
Below, basis is illustrated that the accompanying drawing of its mode of execution describes the present invention in detail.
Fig. 1 is the side cross-sectional view of the configuration example of the magnetic gear device that present embodiment 1 is shown.The magnetic gear device of embodiment of the present invention 1 is rotational circle cartridge type, and it has: the middle yoke 2 of the first cylindric mover 1, the second cylindric mover 3 and cylindrical shape.Wherein, second mover 3 is arranged coaxially in the outside of the first mover 1 and the first mover 1, and with the outside of the first mover 1, there is gap, middle yoke 2 configures coaxially with the first mover 1 and the second mover 3 between the first mover 1 and the second mover 3, and has gap respectively with the first mover 1 and the second mover 3.
First mover 1 has the inside cylindrical portion 11 be made up of magnetic material, on the outer circumferential face in inside cylindrical portion 11, along the circumferential direction basic equal intervals is provided with 3 pole pairs 12, each pole pair 12 is included in the magnet 12b that thickness direction is magnetized, outer circumferential face side is N pole magnet 12a and outer circumferential face side are S pole.
Second mover 3 has the outside cylindrical portion 31 be made up of magnetic material, on the inner peripheral surface of outside cylindrical part 31, along the circumferential direction basic equal intervals is provided with 7 pole pairs 32, each pole pair 32 is included in the magnet 32b that thickness direction is magnetized, inner peripheral surface side is N pole magnet 32a and inner peripheral surface side are S pole.Here, refer to that magnet is magnetized to make outer circumferential face side and inner peripheral surface side be different polarity at the magnetized magnet of thickness direction.Such as, the outer circumferential face side of magnet 12a and inner peripheral surface side are geomagnetic into N pole and S pole respectively, and the outer circumferential face side of magnet 12b and inner peripheral surface side are geomagnetic into S pole and N pole respectively.
In addition, the ratio produced due to eddy current is that low speed rotation side is changed one's position greatly than high-speed rotary, therefore when using terres rares-transition metal series magnet (such as Nd-Fe-B based magnet etc.) to form pole pair 12,32, preferably formed the pole pair 12 of the first mover 1 side by sintered magnet, formed the pole pair 32 of the second mover 3 side by binding magnet (Bonded Magnet).Binding magnet is the magnet making mixture forming and hardening after small magnetite particle or magnet fine powder being mixed with the tackiness agent of such as resin etc. and obtain, and can reduce the generation of eddy current.Sintered magnet is the magnet made by so-called powder metallurgic method, and sintered magnet, compared with binding magnet, although eddy current loss is large, has the characteristic that magnetic force is strong.Therefore, by above-mentioned structure, the active force between the first mover 1 and the second mover 3 can be ensured, and the generation of eddy current can be suppressed as much as possible.
In addition, when use ceramic magnet (such as ferrite lattice) as pole pair 12,32, the eddy current produced is few, therefore considers that installation efficiency and cost etc. are suitably set in the magnet configuring which kind of method for making in the first mover and the second mover.
Middle yoke 2 has the spacing wall 21 of the cylindrical shape separated in the first mover 1 side and the second mover 3 side, this spacing wall 21 keeps 10 magnetics 22, the quantity of magnetic 22 corresponds to the sum of the number 3 of pole pair 12 of the first mover 1 and the number 7 of the pole pair 32 of the second mover 3, and 10 magnetics 22 are along the circumferential direction arranged on spacing wall 21 with basic equal intervals.In addition, spacing wall 21 keeps magnetic 22, make each magnetic 22 and the second mover 3 distance diametrically shorter than the distance between each magnetic 22 and the first mover.Specifically, magnetic 22 is in a shape part for cylinder cut along its length, and spacing wall 21 has the recess that each magnetic 22 embeds on outer circumferential face.Middle yoke 2 is configured in the substantially central portion in the gap of the first mover 1 and the second mover 3, and each magnetic 22 embeds the outer circumferential face of spacing wall 21 in the mode exposed in the second mover 3 side.In addition, can also apply magnetic 22 surface of the second mover 3 side as required.
First mover 1 side of each magnetic 22 is broader than the second mover 3 side in the circumferential.Such as, the cross section perpendicular to axial direction of magnetic 22 is fan-shaped, and the size in the circumference of the first mover 1 side is greater than the size in the circumference of the second mover 3 side.
Middle yoke 2 such as by each magnetic 22 is fixed on be formed as cylindric resin on and make (such as with reference to International Publication No. 2009/087408 pamphlet).In middle yoke 2, the alternating magnetic field comprising 3 subharmonic compositions, 7 subharmonic compositions and the 13 subharmonic compositions produced by pole pair 32 radially intersects.The soft-magnetic body that magnetic 22 also can use such as magnetic metal, the laminate steel be made up of multiple magnetic sheets of lamination and be formed by magnetic pressed compact etc.Especially, in order to can eddy current loss be suppressed, the material preferably using laminate steel as magnetic 22.
When the second mover 3 rotates, due to the magnetic interaction between the pole pair 12,32 that the first mover 1 and the second mover 3 have respectively, the first mover 1 rotates.In this case, first mover 1 fewer than the second mover 3 number of magnetic poles with the rotating speed faster than the second mover 3 rotate up in the side contrary with the sense of rotation of the second mover 3 (see Ikeda wise man also, middle village builds two, one ノ storehouse and manages, " research about improving permanent magnet type magnetic-gear efficiency ", magnetomechanics meeting paper magazine, 2009,33 volumes, No. 2,130-134 page).The ratio Ph/Pl of the number Pl of the number Ph being arranged at the pole pair of the first mover 1 and the pole pair being arranged at the second mover 3 is the gear ratio of the first mover 1 relative to the second mover 3.And when the second mover 3 have rotated 1 circle left, the first mover 1 encloses to right rotation 7/3.
Below, the relation of the configuration of magnetic 22 and the transmitting torque in magnetic gear device is described.
Fig. 2 is the chart of the analog result of the transmitting torque illustrated about magnetic gear device.The implementation condition of this simulation is as described below.First mover 1 is provided with 7 pole pairs 12, and middle yoke 2 has 26 magnetics 22, second mover 3 and has 19 pole pairs 32.The radial dimension of magnetic 22 is 3mm, and circumferential size is about 4mm.Simulate be fixed at the second mover 3 and middle yoke 2, the first mover 1 moment of torsion of acting on the moment of torsion between the first mover 1 and middle yoke 2 and acting between the second mover 3 and middle yoke 2 when rotating.The transverse axis of chart shown in Fig. 2 represents that the phase place of the first mover 1, the longitudinal axis represent and acts on the moment of torsion between the first mover 1 and middle yoke 2 and the moment of torsion between the second mover 3 and middle yoke 2.
In figure, solid line represents the moment of torsion acted between the second mover 3 and middle yoke 2, and dotted line represents the moment of torsion acted between the first mover 1 and middle yoke 2.In addition, in figure thick line represent that the gap of the first mover 1 and middle yoke 2 is 2mm and the gap of the second mover 3 and middle yoke 2 is 1mm when moment of torsion (hereinafter referred to as pattern 1).In figure medium-thick lines represent that the gap of the first mover 1 and middle yoke 2 is 1.5mm and the gap of the second mover 3 and middle yoke 2 is 1.5mm when moment of torsion (hereinafter referred to as pattern 2).In figure fine rule represent that the gap of the first mover 1 and middle yoke 2 is 1mm and the gap of the second mover 3 and middle yoke 2 is 2mm when moment of torsion (hereinafter referred to as mode 3).
As shown in Figure 2, the result of pattern 1 is best, and the moment of torsion acted between the first mover 1, second mover 3 and middle yoke 2 is maximum.Pattern 1 represents result when being configured near the second mover 3 side by magnetic 22, and in the second mover 3, pole pair 32 is arranged with short spacing.On the contrary, the result of mode 3 is the poorest, and the moment of torsion acted between the first mover 1, second mover 3 and middle yoke 2 is minimum.Mode 3 represents result when being configured near the first mover 1 side by magnetic 22, and in the first mover 1, pole pair 12 is arranged with long spacing.
From above analog result, as compared to situation magnetic 22 being configured in the first mover 1 and the situation of the gap central authorities of the second mover 3 or magnetic 22 being configured in the first mover 1 side, magnetic 22 can be improved transmitting torque when be provided with the second mover 3 side configuration of pole pair 32 with short spacing.
By as described below for magnetic 22 principle that transmitting torque is high when be provided with the second mover 3 side configuration of pole pair 32 with short spacing.The pole pair 12 of the first mover 1 that high-speed rotary is changed one's position is compared with the second mover 3 of low speed rotation side, and spacing is longer.That changes one's position from high-speed rotary broadly spreads compared with magnet 32a, 32b of low speed rotation side with the magnetic flux of magnet 12a, 12b of long spacing configuration, strong magnetic force arrives the second mover 3, but from the flux concentrating of magnet 32a, 32b of the low speed rotation side configured with short spacing near the second mover 3, strong magnetic force has the trend not arriving the first mover 1.Therefore, when the magnetic flux that magnetic 22 couples of magnet 12a, 12b, 32a, the 32b by middle yoke 2 send is modulated, when magnetic 22 is carried out Flux modulation near magnet 32a, 32b side configuration of low speed rotation side, be subject to concentrated magnetic flux that is nigh, that sent by magnet 32a, 32b of low speed rotation side and arrive at a distance, the effect of both magnetic fluxs that magnet 12a, 12b of being changed one's position by high-speed rotary send, Flux modulation is stronger, and result can carry out larger moment of torsion transmission.
With magnetic 22 is configured in the first mover 1 and compares with the situation of the substantial middle in the gap of the second mover 3, better can improve the moment of torsion transmitted between the first mover 1 and the second mover 3 according to the magnetic gear device of mode of execution 1.
In addition, size in the circumference of the first mover 1 side of magnetic 22 is greater than the size in the circumference of the second mover 3 side, therefore, even if middle yoke 2 rotates, create the centrifugal force making each magnetic 22 to radial outside movement, on each magnetic 22, also can be acted on the power of resistance centrifugal force by spacing wall 21.In addition, because magnetic 22 configures near the second mover 3, therefore, although the attraction force on radial outside direction acts on magnetic 22, this magnetic 22 also can be acted on the power of resistance attraction force by spacing wall 21.Therefore, the outer circumferential face noting be used in middle yoke 2 is arranged the maintenance structure keeping magnetic 22, just can prevent magnetic 22 from coming off from spacing wall 21 due to centrifugal force or attraction force.
Therefore, it is possible to shorten the radial distance between magnetic 22 and the second mover 3 of low speed side, the moment of torsion of transmission between the first mover 1 and the second mover 3 can be made larger.
The shape of the magnetic 22 shown in Fig. 1 is examples, as long as the first mover 1 side is broader in the circumferential than the second mover 3 side, to the shape of magnetic 22, just there is no particular limitation.As long as that is, the two end part in the circumference of the magnetic 22 of the first mover 1 side relative to middle yoke 2 central shaft angulation than the two end part in the circumference of the magnetic 22 of the second mover 3 side relative to middle yoke 2 central shaft angulation greatly.Above-mentioned angle is: link the one end in the circumference of magnetic 22 and the straight line of above-mentioned central shaft and the straight line angulation of the other end linked in the circumference of magnetic 22 and above-mentioned central shaft.
In addition, usually, act on middle yoke 2 and the air friction resistance between the first mover 1 and the second mover 3 increases with the increase of the relative velocity of each parts, due to second mover 3 side of middle yoke 2 near low speed rotation is configured, also be preferred viewed from the viewpoint of air friction resistance, can transmitting torque be improved.
In addition, in mode of execution 1, describe the magnetic gear device magnet of inner side row and the magnet in outside arranges as mover, but also can be configured such that the magnet in inner side or outside arranges fixes and makes the structure that middle yoke 2 rotates.
(variation 1)
Fig. 3 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 1 is shown.The magnetic gear device of variation 1 and the difference of mode of execution 1 are, magnetic 122 is buried in the spacing wall 121 of middle yoke 102.
In variation 1, due to magnetic 122 not in the first mover 1 side and the second mover 3 side any side expose, therefore, it is possible to magnetic 122 and the environment of the first mover 1 side and the environment of the second mover 3 side are cut off.
In addition, even if middle yoke 102 rotates, create the centrifugal force making each magnetic 122 to radial outside movement, or on magnetic 122, acted on the attraction force of radial outside due to the magnetic force of the second mover 3, on each magnetic 122, also can be acted on the power of resistance centrifugal force by spacing wall 121, therefore, the thickness that will not cover spacing wall 121 part of magnetic 122 periphery is formed the very thick magnetic 122 that prevents disperses to radial outside due to centrifugal force.Therefore, it is possible to formed thin by the thickness of the spacing wall 121 of the outer circumferential side of magnetic 122, the moment of torsion of transmission between the first mover 1 and the second mover 3 can be made larger.
(variation 2)
Fig. 4 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 2 is shown.The magnetic gear device of variation 2 and the difference of mode of execution 1 are, adjacent multiple magnetics 222 are connected by joint 222a each other.Joint 222a is the sheet material that radial dimension is less than magnetic 222, and joint 222a and multiple magnetic 222 form as one.
In variation 2, when manufacturing middle yoke 202, due to the state being formed as with multiple magnetics 222 that basic equal intervals configures being connected by joint 222a at circumferencial direction, therefore, it is possible to each magnetic 222 is configured the work to spacing wall 221 by omission, can manufacture efficiently.
In addition, even if middle yoke 202 rotates, create the centrifugal force making each magnetic 222 to radial outside movement, or on magnetic 222, acted on the attraction force of radial outside due to the magnetic force of the second mover 3, on each magnetic 122, also the power of resistance centrifugal force can be acted on by spacing wall 221, therefore, it is possible to reduce the power acting on the relevant centrifugal force of the attachment portion of magnetic 222 and joint 222a.Therefore, it is possible to prevent the attachment portion of magnetic 222 and joint 222a from rupturing.
(variation 3)
Fig. 5 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 3 is shown.The magnetic gear device of variation 3 and the difference of mode of execution 1 are, multiple magnetics 322 adjacent in middle yoke 302 are connected by joint 322a each other, and magnetic 322 and joint 322a are buried in spacing wall 321.Joint 322a is the sheet material that radial dimension is less than magnetic 322, and joint 322a and multiple magnetic 322 form as one.
In variation 3, due to magnetic 322 and joint 322a not in the first mover 1 side and the second mover 3 side any side expose, therefore, it is possible to magnetic 322 and the environment of joint 322a and the first mover 1 side and the environment of the second mover 3 side are cut off.
(variation 4)
Fig. 6 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 4 is shown.The magnetic gear device of variation 4 and the difference of mode of execution 1 are, adjacent multiple magnetics 422 are connected by joint 422a each other, and the first mover 1 that joint 422a changes one's position near high-speed rotary configures.Joint 422a is the cylindric sheet material that radial dimension is less than magnetic 422, and joint 422a and multiple magnetic 422 form as one.
In addition, by joint 422a being formed to pass the two ends of the central axis direction of middle yoke 402, joint 422a and magnetic 422 play the effect of the spacing wall the first mover 1 and the second mover 3 separated.In this case, the holding member 421 of the position relationship for keeping each magnetic 422 is also set between each magnetic 422.In addition, if the intensity of the joint 422a be connected to each other by magnetic 422 is no problem, also holding member 421 can be omitted.
In variation 4, because the radial distance between joint 422a and the first mover 1 is shorter than the radial distance between joint 422a and the second mover 3, therefore, it is possible to improve the transmitting torque of magnetic gear device.
The reason of the first mover 1 side configuration of preferably being changed one's position near high-speed rotary by joint 422a is as described below.Compared with the second mover 3 of low speed rotation side, distance between the pole pair 12 of the first mover 1 that high-speed rotary is changed one's position.Large with the amount that long spacing trends towards in the amount of magnetic flux that magnet 12a, 12b that high-speed rotary changes one's position configuration send the magnetic flux sent than magnet 32a, 32b of low speed rotation side.
Here, the joint 422a connecting each magnetic 422 is equivalent to short circuit magnetic circuit from the angle of magnet.The magnetic flux of short circuit becomes the interactional invalid magnetic flux between magnet 32a, 32b being helpless to magnet 12a, 12b that high-speed rotary changes one's position and low speed rotation side.Ineffective magnetic fluxes is preferably little as far as possible.In addition, short circuit flux flows into until the Flux saturation of joint 422a.That is, the ineffective magnetic fluxes produced by joint 422a is the steady state value determined according to the sectional area of joint 422a, and the magnetic flux of therefore opposed with magnetic 422 magnet is larger, and ineffective magnetic fluxes is less relative to the ratio of this magnetic flux.Therefore, by being configured in by joint 422a with pole pair 12 side of long spacing configuration, the magnetic flux sent by magnet 12a, 12b makes joint 422a magnetic saturation, can reduce the ratio of invalid magnetic flux, and can prevent the reduction of transmitting torque.
(variation 5)
Fig. 7 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 5 is shown.The magnetic gear device of variation 5 and the difference of mode of execution 1 are, adjacent multiple magnetics 522 in middle yoke 502 are connected by joint 522a each other, and the first mover 1 that joint 522a changes one's position near high-speed rotary configures, and magnetic 522 and joint 522a are buried in spacing wall 521.Joint 522a is the cylindric sheet material that radial dimension is less than magnetic 522, and joint 522a and multiple magnetic 522 form as one.
In variation 5, magnetic 522 and the environment of joint 522a and the first mover 1 side and the environment of the second mover 3 side can be cut off.In addition, as mentioned above, the transmitting torque of magnetic gear device can be improved.
(variation 6)
Fig. 8 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 6 is shown.The magnetic gear device of variation 6 and the difference of mode of execution 1 are, multiple magnetics 622 in middle yoke 602 are kept by holding member 621 respectively, make each magnetic 622 along the circumferential direction to configure with basic equal intervals, each magnetic 622 exposes in the first mover 1 side and second these both sides, mover 3 side.In this case, by by the second mover 3 side configuration of magnetic 622 near low speed rotation side, the transmitting torque of magnetic gear device can be improved.
(variation 7)
Variation 7 is related invention of the present invention.In variation 7, illustrate that the cross section perpendicular to axial direction of magnetic is fan-shaped magnetic gear device.
Fig. 9 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 7 is shown.The magnetic gear device of variation 7 and the difference of mode of execution 1 are, the first mover 701 is configured to low speed rotation, and the second mover 703 is configured to High Rotation Speed.
First mover 701 has the inside cylindrical portion 711 of being made up of magnetic material, outer circumferential face in inside cylindrical portion 711 is along the circumferential direction configured with 7 pole pairs 712 with basic equal intervals, and each pole pair 712 is included in the magnet 712b that magnet 712a that the magnetized outer circumferential face side of thickness direction is N pole and outer circumferential face side are S pole.Second mover 703 has the outside cylindrical portion 731 of being made up of magnetic material, along the circumferential direction be configured with 3 pole pairs 732 with basic equal intervals at the inner peripheral surface of outside cylindrical part 731, each pole pair 732 is included in the magnet 732b that magnet 732a that the magnetized inner peripheral surface side of thickness direction is N pole and inner peripheral surface side are S pole.Middle yoke 702 has and to be separated in the first mover 701 side and the second mover 703 side and to keep cylindric spacing wall 721,10 magnetics 722 of 10 magnetics 722 to be along the circumferential direction arranged in spacing wall 721 with basic equal intervals.In addition, spacing wall 721 keeps magnetic 722, makes the radial distance between each magnetic 722 and the first mover 701 shorter than the distance between each magnetic 722 and the second mover 703.That is, each magnetic 722 configures near the first mover 701 of low speed rotation side.
In variation 7, identical with mode of execution 1, and magnetic 722 is configured in the first mover 701 and compares with the situation of the substantial middle in the gap of the second mover 703, the moment of torsion transmitted between the first mover 701 and the second mover 703 can be improved.
(variation 8)
Variation 8 is related invention of the present invention.In variation 8, illustrate that the cross section perpendicular to axial direction of magnetic is fan-shaped magnetic gear device.
Figure 10 is the side cross-sectional view of the configuration example of the magnetic gear device that variation 8 is shown.Identical with variation 7, the magnetic gear device of variation 8 and the difference of mode of execution 1 are, first mover 801 is configured to low speed rotation and the second mover 803 is configured to High Rotation Speed, and each magnetic 822 is connected by joint 822a, and the second mover 803 that joint 822a changes one's position near high-speed rotary configures.
First mover 801 has the inside cylindrical portion 811 of being made up of magnetic material, outer circumferential face in inside cylindrical portion 811 is along the circumferential direction configured with 7 pole pairs 812 with basic equal intervals, and each pole pair 812 is included in the magnet 812b that magnet 812a that the magnetized outer circumferential face side of thickness direction is N pole and outer circumferential face side are S pole.Second mover 803 has the outside cylindrical portion 831 of being made up of magnetic material, along the circumferential direction be configured with 3 pole pairs 832 with basic equal intervals at the inner peripheral surface of outside cylindrical part 831, each pole pair 832 is included in the magnet 832b that magnet 832a that the magnetized inner peripheral surface side of thickness direction is N pole and inner peripheral surface side are S pole.In middle yoke 802, be along the circumferential direction configured with 10 magnetics 822 connected by joint 822a with basic equal intervals.The holding member 821 of the position relationship keeping each magnetic 822 is respectively equipped with between each magnetic 822.Holding member 821 keeps magnetic 822 to make the radial distance between each magnetic 822 and the first mover 801 shorter than the distance between each magnetic 822 and the second mover 803.That is, each magnetic 822 configures near the first mover 801 of low speed rotation side.
Identical with mode of execution 1 and variation 1, in variation 8, compared with the situation of the substantial middle in the gap be arranged on by magnetic 822 between first mover 801 and the second mover 803, the moment of torsion transmitted between the first mover 801 and the second mover 803 can be improved.
In addition, be configured to make, in the variation 7,8 of the first mover 701,801 low speed rotation, to describe the structure corresponding with mode of execution 1 and variation 4, but be certainly also applicable to other variation 1 ~ 3,5,6 corresponding structures.
(mode of execution 2)
Figure 11 is the side cross-sectional view of the configuration example of the magnetic gear device that mode of execution 2 is shown.In mode of execution 2, describe the example of the magnetic gear device as torque converter applied in pump.The pump of mode of execution 2 has the housing 4 of roughly bottomed cylindrical, and a sidewall of housing 4 has cylindric depression.This housing 4 comprises: cylindrical shell 42; For closing the large plectane portion 41 of sidewall of the opening of this cylindrical shell 42 side; Be arranged on the annular portion 43 of this cylindrical shell 42 opposite side; From the inner circumference edge of annular portion 43 to the extended cylindric spacing wall 44 of the length direction center side of cylinder 42; And the above-mentioned center side of blocking spacing wall 44 and the sidewall small circular plate portion 45 that arranges.In the large plectane portion 41 of sidewall, be formed with the inflow entrance 41a that fluid flows into, be provided with the outflow opening 42a flowed out for fluid in the appropriate location of cylindrical shell 42.
On the inner circumferential side and outer circumferential side of the spacing wall 44 of formation housing 4, the first cylindric mover 5 and the second mover 6 configure coaxially with spacing wall 44 respectively, and jointly form the magnetic gear device of rotational circle cartridge type with magnetic 46 described later.
First mover 5 has inside cylindrical portion 51, the diameter in inside cylindrical portion 51 is less than the diameter of spacing wall 44, identical with mode of execution 1, outer circumferential face in inside cylindrical portion 51 is along the circumferential direction configured with 3 pole pairs 52 with basic equal intervals, and each pole pair 52 is included in the magnet that magnet that the magnetized outer circumferential face side of thickness direction is N pole and outer circumferential face side are S pole.The input shaft 71 of motor 7 inserts and is fixed on inside cylindrical portion 51.
Second mover 6 has outside cylindrical portion 61, the diameter in outside cylindrical portion 61 is greater than the diameter of spacing wall 44, along the circumferential direction be configured with 7 pole pairs 62 with basic equal intervals at the inner peripheral surface of outside cylindrical part 61, each pole pair 62 is included in the magnet that magnet that the magnetized inner peripheral surface side of thickness direction is N pole and inner peripheral surface side are S pole.In the end side of outside cylindrical part 61, namely in side, sidewall large plectane portion 41, be provided with armature portion 63, the substantially central portion place in armature portion 63 is provided with output shaft 64, and the running shaft of output shaft 64 and input shaft 71 are aimed at.The top of output shaft 64 is provided with rotary wings 8.
Bury in the inside of spacing wall 44 and have 10 magnetics 46, each magnetic 46 along the circumferential direction configures with basic equal intervals.In addition, spacing wall 44 keeps magnetic 46, makes the radial distance between each magnetic 46 and the second mover 6 shorter than the distance between each magnetic 46 and the first mover 5.In addition, the shape of magnetic 46 is identical with mode of execution 1, and the first mover 5 side is broader in the circumferential than pole pair 62 side of the second mover 6.Such as, the cross section perpendicular to axial direction of magnetic 46 is fan-shaped, and the size in the circumference of the first mover 5 side is greater than the size in the circumference of pole pair 62 side of the second mover 6.The spacing wall 44 of internal configurations magnetic 46 plays the effect of middle yoke.
According to the pump formed as stated above, transmission of the moment of torsion of motor 7 can being slowed down from the first mover 5 to the second mover 6.In addition, due to by spacing wall 44 by the first mover 5 side and the second mover 6 side completely isolated, therefore, it is possible to prevent the motor 7 of the first mover 5 side to be emerging in the fluid of the second mover 6 side.And, in present embodiment 2, due to second mover 6 of magnetic 46 near low speed rotation side is configured, therefore with magnetic 46 is configured in spacing wall 44 substantially central portion prior art compared with, can transmitting torque be improved.
Related invention of the present invention is below described.
(mode of execution 3)
Figure 12 is the exploded perspective view of the configuration example of the magnetic gear device that mode of execution 3 is shown.Figure 13 is the side cross-sectional view of the magnetic gear device of mode of execution 3.The magnetic gear device of mode of execution 3 is circular plate type, and comprise: the first discoideus mover 3001, the second discoideus mover 3003 and discoideus middle yoke 3002, second mover 3003 configures coaxially with the first mover 3001 above the first mover 3001, and with the first mover 3001, there is gap, middle yoke 3002 configures coaxially with the first mover 3001 and the second mover 3003 between the first mover 3001 and the second mover 3003, and has gap respectively with the first mover 3001 and the second mover 3003.
First mover 3001 has the first plectane 3011 be made up of magnetic material, along the circumferential direction be configured with 6 pole pairs 3012 with basic equal intervals at the upper surface of the first plectane 3011, each pole pair 3012 comprise upside for the magnet 3012a of N pole and upside be the magnet 3012b of S pole.
Second mover 3003 has the second plectane 3031 be made up of magnetic material, along the circumferential direction be configured with 14 pole pairs 3032 with basic equal intervals at the lower surface of the second plectane 3031, each pole pair 3032 comprise downside for the magnet 3032a of N pole and downside be the magnet 3032b of S pole.
Middle yoke 3002 has discoid holding member 3021, holding member 3021 is for keeping 20 magnetics 3022, the quantity of magnetic 3022 corresponds to the sum of the number 6 of pole pair 3012 of the first mover 3001 and the number 14 of the pole pair 3032 of the second mover 3003, and is along the circumferential direction configured with 20 magnetics 3022 with basic equal intervals in holding member 3021.In addition, holding member 3021 keeps magnetic 3022, makes the distance on running shaft direction of each magnetic 3022 and the second mover 3003 shorter than the distance of each magnetic 3022 and the first mover 3001.
Also the effect identical with mode of execution 1 can be obtained in the magnetic gear device of mode of execution 3.In addition, also the technological thought of variation 1 ~ 8 can be applied to the magnetic gear device of mode of execution 3.
(mode of execution 4)
Figure 14 is the exploded perspective view of the configuration example of the magnetic gear device that mode of execution 4 is shown.Figure 15 is the side cross-sectional view of the magnetic gear device of mode of execution 4.The magnetic gear device of mode of execution 4 is line style, wherein each component parts is long plate shape, it comprises: middle yoke 4002, second mover 4003 of the first mover 4001 of long plate shape, the second mover 4003 of long plate shape and long plate shape is arranged on the top of the first mover 4001 and has gap with the first mover 4001; Middle yoke 4002 to be arranged between the first mover 4001 and the second mover 4003 and to have gap respectively with the first mover 4001 and the second mover 4003.The length direction of the first mover 4001, second mover 4003 and middle yoke 4002 is basically identical.
First mover 4001 has the first long slab portion 4011 of being made up of magnetic material, upper surface in the first long slab portion 4011 is configured with 6 pole pairs 4012 at per unit distance, delta L with basic equal intervals along its length, each pole pair 4012 comprise upside for the magnet 4012a of N pole and upside be the magnet 4012b of S pole.
Second mover 4003 has the second long slab portion 4031 of being made up of magnetic material, lower surface in the second long slab portion 4031 is configured with 14 pole pairs 4032 at per unit distance, delta L with basic equal intervals along its length, each pole pair 4032 comprise downside for the magnet 4032a of N pole and downside be the magnet 4032b of S pole.
Middle yoke 4002 has the holding member 4021 of long plate shape, holding member 4021 is for keeping 20 magnetics 4022, the number of magnetic 4022 corresponds to the sum of the number 6 of pole pair 4012 of the first mover 4001 and the number 14 of the pole pair 4032 of the second mover 4003, in holding member 4021, be configured with 20 magnetics 4022 at per unit distance, delta L with basic equal intervals along its length.In addition, holding member 4021 keeps magnetic 4022, make each magnetic 4022 and the distance of the second mover 4003 on departure direction shorter than the distance of each magnetic 4022 and the first mover 4001.
Also the effect identical with mode of execution 1 can be obtained in the magnetic gear device of mode of execution 4.In addition, also the technical conceive of variation 1 ~ 8 can be applied to the magnetic gear device of mode of execution 4.
(mode of execution 5)
Figure 16 is the exploded perspective view of the configuration example of the magnetic gear device that mode of execution 5 is shown.Figure 17 is the side cross-sectional view of the magnetic gear device of mode of execution 5.The magnetic gear device of mode of execution 5 is line style, wherein each component parts is cylindric, comprise: middle yoke 5002, second mover 5003 of the first cylindric mover 5001, the second cylindric mover 5003 and cylindrical shape configures coaxially at the outer circumferential side of the first mover 5001 and the first mover 5001 and has gap with the outer circumferential side of the first mover 5001; Middle yoke 5002 configures coaxially with the first mover 5001 and the second mover 5003 and has gap respectively with the first mover 5001 and the second mover 5003 between the first mover 5001 and the second mover 5003.
First mover 5001 has the inside cylindrical portion 5011 of being made up of magnetic material, on the outer circumferential face in inside cylindrical portion 5011, centrally axle direction is configured with 6 pole pairs 5012 at per unit distance, delta L with basic equal intervals, each pole pair 5012 comprise outside for the magnet 5012a of N pole and outside be the magnet 5012b of S pole.
Second mover 5003 has the outside cylindrical portion 5031 of being made up of magnetic material, on the inner peripheral surface of outside cylindrical part 5031, centrally axle direction is configured with 14 pole pairs 5032 at per unit distance, delta L with basic equal intervals, each pole pair 5032 comprise inner side for the magnet 5032a of N pole and inner side be the magnet 5032b of S pole.
Middle yoke 5002 has the holding member 5021 of tubular, holding member 5021 is for keeping 20 magnetics 5022, the quantity of magnetic 5022 corresponds to the sum of the number 6 of pole pair 5012 of the first mover 5001 and the number 14 of the pole pair 5032 of the second mover 5003, in holding member 5021, centrally axle direction is configured with 20 magnetics 5022 at per unit distance, delta L with basic equal intervals.In addition, holding member 5021 keeps magnetic 5022, makes the radial distance between each magnetic 5022 and the second mover 5003 shorter than the distance between each magnetic 5022 and the first mover 5001.
As mode of execution 5 also can obtain the effect identical with mode of execution 1 in the magnetic gear device that forms.In addition, also the technical conceive of variation 1 ~ 8 can be applied to the magnetic gear device of mode of execution 5.
In addition, should be appreciated that, all the elements of above disclosed mode of execution are example of the present invention, and it is not construed as limiting the invention.In addition, protection scope of the present invention limited by claim, and it also limited by above-mentioned explanation, and the content be equal to claims and the various distortion carried out in claims all drop in protection scope of the present invention.
Description of reference numerals
1 first mover
2 middle yokes
3 second movers
11 inside cylindrical portions
12 pole pairs
21 spacing wall
22 magnetics
31 outside cylindrical portions
32 pole pairs
Claims (9)
1. a magnetic gear device, comprising:
The first cylindric magnet row, it is circumferentially configured with multiple pole pair with basic equal intervals;
The second cylindric magnet row, itself and described first magnet arrange opposedly in the outside that described first magnet arranges and described first magnet row arranged coaxial, and are configured with multiple pole pair along described circumference with basic equal intervals with the spacing shorter than the pole pair spacing of the first magnet row; With
Cylindric magnetic row, it is arranged between described first magnet row and described second magnet row, and is configured with multiple magnetic along described circumference with basic equal intervals,
The feature of described magnetic gear device is,
Distance between described multiple magnetic and described second magnet arrange be less than described multiple magnetic and described first magnet arrange between distance,
The described first magnet row side of described magnetic is broader in the circumferential than described second magnet row side.
2. magnetic gear device as claimed in claim 1, is characterized in that,
Size in the described circumference of the described first magnet row side of described magnetic is greater than the size in the described circumference of described second magnet row side.
3. magnetic gear device as claimed in claim 1 or 2, is characterized in that,
Described magnetic row have spacing wall, and described spacing wall keeps described multiple magnetic, and is separated in described first magnet row side and described second magnet row side.
4. magnetic gear device as claimed in claim 3, is characterized in that,
Described multiple magnetic is kept by described spacing wall and exposes in described second magnet row side.
5. magnetic gear device as claimed in claim 3, is characterized in that,
Described multiple magnetic is buried in described spacing wall.
6. the magnetic gear device as described in any one of claim 1 to 5, is characterized in that,
Described magnetic row have the joint connected by adjacent described multiple magnetics, and described multiple magnetic and described joint form as one.
7. magnetic gear device as claimed in claim 6, is characterized in that,
Distance between described joint and described first magnet row is less than the distance between described joint and described second magnet row.
8. the magnetic gear device as described in any one of claim 1 to 7, is characterized in that,
Described multiple magnetic comprises laminate steel.
9. the magnetic gear device as described in any one of claim 1 to 8, is characterized in that,
Described first magnet row comprise sintered magnet,
Described second magnet row comprise binding magnet.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-003684 | 2013-01-11 | ||
| JP2013003684 | 2013-01-11 | ||
| PCT/JP2013/085284 WO2014109268A1 (en) | 2013-01-11 | 2013-12-28 | Magnetic gear device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104919219A true CN104919219A (en) | 2015-09-16 |
Family
ID=51166924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380070003.6A Pending CN104919219A (en) | 2013-01-11 | 2013-12-28 | Magnetic gear device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160006335A1 (en) |
| JP (1) | JP6020598B2 (en) |
| CN (1) | CN104919219A (en) |
| WO (1) | WO2014109268A1 (en) |
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| CN108291625A (en) * | 2015-12-17 | 2018-07-17 | 日立金属株式会社 | Magnetic variable-speed motor |
| CN110291282A (en) * | 2016-12-15 | 2019-09-27 | 通用电气航空系统有限责任公司 | Air Turbine Starter with separator |
| CN112615518A (en) * | 2020-11-30 | 2021-04-06 | 珠海格力电器股份有限公司 | Magnetic gear and composite motor with same |
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| CN104500691B (en) * | 2014-12-17 | 2017-01-25 | 大连理工大学 | Permanent magnetic transmission gearbox |
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| EP3261238B1 (en) * | 2016-06-23 | 2020-08-12 | Goodrich Actuation Systems Limited | Magnetic gear |
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| JP2018127998A (en) * | 2017-02-10 | 2018-08-16 | 株式会社荏原製作所 | Pump device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6020598B2 (en) | 2016-11-02 |
| US20160006335A1 (en) | 2016-01-07 |
| WO2014109268A1 (en) | 2014-07-17 |
| JPWO2014109268A1 (en) | 2017-01-19 |
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Application publication date: 20150916 |